Ph.D. Political Science, Sungkyunkwan University
 

Former Deputy secretary of National Security Council
Former Minister of Unification 
Standing Chairman of the National Security Council.

A Discourse on Korean Unification (2012, Korean)

North Korea- China Relations: 1945～2000(It was published 2000 in Korean. Later in 2005, it was published in Bejing in Chinese.)

Understanding of Contemporary North Korea(2000, Korean)

The study of Unification in a Divided Period(1998, Korean)

A Study on the Workers' Party of Korea(1995, Korea)

North Korea and Inter-Korean Relations
North Korea-China Relations
Korea's Diplomatic and Security Objectives